The technology is capable of delivering data transfer speeds are high may not reach a very high stage. However, the development of today's technological world has demanded every telecommunications provider to prepare a better system than before, one using HSDPA and EVDO system. The need for a data connection that is high in many countries make the population of devices including mobile phones, tablets and modems to provide HSDPA and EVDO systems.
EVDO (Evolution Data Optimized) is a third-generation mobile broadband technology of 3G CDMA networks operating in and capable of providing higher data speeds of 2 Mbps in a mobile environment. CDMA EV-DO comprised of three major standards as specified by 3GPP2 as part of the CDMA 2000 standard are:
CDMA2000 1xEV-DO Release 0 (Rel 0)
CDMA2000 1xEV-DO Revision A (Rev. A)
CDMA2000 1xEV-DO Revision B (Rev B)
While HSPA (High Speed Packet Access) is the terminology used to refer to the HSDPA (3GPP Release 5) and HSUPA (3GPP Release 6), based on 3.5 G GSM technology and has a much higher speed than 3G and GPRS. Theoretically, HSPA compaction speed can go up to 14.4 Mbps downlink and 5.8 Mbps uplink, 3-4 times faster than 3G downlink speed and 15 times higher than GPRS. But the network is currently only able to deliver 3.6 Mbps downlink and 500 kbps for uplink.
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